in acertain street of 200 houses 170 have electricity and 145 have glass doors. how many houses have both electricity and glass doors assuming that each has either a glass doors or electricity or both

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.